Expected number of exoplanets (with radii <6 R_Earth) that are detectable in only one, two, or all three filters (see color code for the different filters in the figure legend). There are no planets expected to be detectable simultaneously at 5.6 and 15 μm alone. In total ~315 exoplanets can be detected in at least one of our simulated filters. Any number of discrepancies are due to rounding errors.